Tractor linkage hook



FIG. 1 is a top plan view of a tractor linkage hook showing my new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is an opposite side view thereof; and,

FIG. 5 is a bottom perspective view thereof.

The rear view forms no part of the claimed design.

The broken line showing in FIGS. 2, 4, and 5 is included for the purpose of illustrating portions of the tractor linkage hook and forms no part of the claimed design. 

The ornamental design for a tractor linkage hook, as shown and described. 